BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Tendrils. A tendril is a thread-like structure found in climbing plants and used for support. It is a modified leaf, stem, or petiole, that possesses coiling as its form of thigmotropism. An example of a plant that has tendrils is the Humulus Lupulus, or the common hop, shown below.

Detailed explanation-2: -An example of thigmotropism is the coiling movement of tendrils in the direction of an object that it touches. On the other hand, the folding movement of the Mimosa pudica leaflets, can be considered as an example of thigmonastism.

Detailed explanation-3: -Thigmotropism behavior causes the creeping plant to grow and coil around the tree and grow in an upward direction towards it. Ivies often use trees for climbing support. Some house or garden plants also show thigmotropic behavior, such as Morning glory, periwinkle, Money plants, Passion vines, Ivy plant, etc.

Detailed explanation-4: -The word “thigmomorphogenesis” comes from the Greek thigma meaning “touch, ” morpho meaning “shape, ” and genesis meaning “creation.” An example of thigmomorphogenesis is the visible contrast between two trees of the same species, one in a thick forest and one in a field.

Detailed explanation-5: -The clearest example of thigmotropism is the coiling that occurs in some tendrils. However, roots also depend on touch sensitivity to navigate their way through the soil. The general touch response in roots is negative. That is, when a root “feels” an object, the root grows away from the object.